[Fix] Add optional generate-job-summary input to input parameters

[dinisnunes1]

Issue: Closes #27

Current Problem:
This action is always posting the job summary (attached to the workflow run). This can be useful in some cases, but it also pollutes the workflow page. So it should be optional.

This PR solution:
Add an optional parameter generate-job-summary, and only run renderSummary() if this is true (true by default).

Example of how to use it:

If we want to display the job summary on the workflow result

- name: Setup Android SDK
  uses: amyu/setup-android@v2
  with:
    cache-disabled: true
    sdk-version: '31'
    build-tools-version: '30.0.2'
    ndk-version: '21.3.6528147'

If we want to hide the job summary on the workflow result

- name: Setup Android SDK
  uses: amyu/setup-android@v2
  with:
    cache-disabled: true
    sdk-version: '31'
    build-tools-version: '30.0.2'
    ndk-version: '21.3.6528147'
    generate-job-summary: false

[amyu]

SUPER THANKS!